New columns are required in the database, so follow the instructions to upgrade from 1.6.0...

Upgrading from 1.6.0:

1. Backup config.inc.php (copy to config.inc.php.bak)
2. Extract the new package over your existing installation of queXF 1.6.0
3. Run the following SQL code on your queXF database (will allow for the processing function to operate):